The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 18, 2007
Filed:
Aug. 27, 2001
Lane W. Lee, Lafayette, CO (US);
Timothy R. Feldman, Louisville, CO (US);
Douglas M. Rayburn, Denver, CO (US);
Gary G. Kiwimagi, Loveland, CO (US);
Lane W. Lee, Lafayette, CO (US);
Timothy R. Feldman, Louisville, CO (US);
Douglas M. Rayburn, Denver, CO (US);
Gary G. Kiwimagi, Loveland, CO (US);
DPHI Acquisitions, Inc., Longmont, CO (US);
Abstract
A system and method is provided for authenticating a device. A method includes receiving a certificate from the device, the certificate including a plurality of fields, including a field holding a digital signature from a certifying authority, verifying the digital signatures in the certificate, the verifying including at least one of verifying the certifying authority digital signature using the certifying authority public key; and verifying a device digital signature using a device public key, and receiving validation data from a source, the validation data identifying one or more data in the certificate as valid or invalid according to predetermined criteria, and if the digital signatures are verified and validated, transmitting a session key to the device to establish a secure communication channel.